A company in San Diego, properly known as Pangea Intellectual Properties, LLC, that was set up by a guy who owns two US Patents that he apparently believes make him the inventor e-commerce. The company has filed suit against dozens of small and medium-sized e-commerce companies for patent infringment, demanding licensing fees of about five thousand dollars from each.

A group of the defendents has banded together to form the PanIP Defense Group in an effort to get the two patents re-examined and invalidated so the e-commerce world can get on with its life. They have an informative website.